The HMX series of Gefran, are pressure transmitters for use in High-temperature environments and specifically designed for melt pressure measurement and available only to be used in large-scale fixed installations or in large-scale stationary industrial tools, typically extruders, or for laboratory B2B equipment for R&D purposes according to the European Directive 2011/65/EU.
The HMX series of Gefran are pressure transmitters with HART communication protocol for use in high-temperature environments with explosive atmosphere presence.
The main characteristic of this series is the capability to read the temperature of the media up to 400°C.
The constructive principle is based on the hydraulic transmission of the pressure.
The fluid-filled system assures temperature stability.
The physical measure is transformed into an electrical measure by means of strain-gauge technology.
Pressure ranges from: 0-17 a 0-2000 bar/0-250 a 0-30000 psi
Extensimetric measurement principle with Wheatstone bridge
Accuracy: < ±0.25% FS (H); < ±0.5% FS (M)
Calibration signal 80% FS internally generated
Protection level: IP65 (6-pin connector)
1/2-20UNF, M18x1.5 standard threads; other types available on request
Standard diaphragm is 15-5 PH stainless steel with GTP+ coating
17-7 PH corrugated stainless steel diaphragm with GTP+ coating for ranges below 100 bar-1500 psi